MESON Chess Problem Database

Problem Display
PID: 227889 (8/2K5/kp6/3Q4/8/8/8/8 w - - 0 1)

L'Hermet, Johann Georg Rudolf

Revista Romana de Sah, 1926

8/2K5/kp6/3Q4/8/8/8/8

#2

2 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ka7
      • 2.Qa2#
      • 2.Qb7#
    • 1...b5
      • 2.Qa2#
      • 2.Qa8#
  • Tries
    • 1.Kc8?
      • 1...Ka7
        • 2.Qa2#
        • 2.Qb7#
      • 1...b5!
    • 1.Qb3?
      • threat
        • 2.Qa4#
        • 2.Qxb6#
      • 1...Ka7
        • 2.Qa2#
        • 2.Qa4#
        • 2.Qa3#
      • 1...b5
        • 2.Qa2#
        • 2.Qa3#
      • 1...Ka5!
    • 1.Qc4+?
      • 1...Ka7
        • 2.Qa2#
        • 2.Qa4#
      • 1...b5
        • 2.Qa2#
      • 1...Ka5!
    • 1.Qc6?
      • threat
        • 2.Qa4#
        • 2.Qxb6#
      • 1...Ka7
        • 2.Qa4#
        • 2.Qb7#
      • 1...Ka5!
    • 1.Qd2?
      • 1...Ka7
        • 2.Qa2#
      • 1...b5
        • 2.Qa2#
      • 1...Kb5!
    • 1.Qd3+?
      • 1...Ka7
        • 2.Qa3#
      • 1...b5
        • 2.Qa3#
      • 1...Ka5!
    • 1.Qb5+?
      • 1...Ka7
        • 2.Qa4#
      • 1...Kxb5!
    • 1.Qc5?
      • threat
        • 2.Qxb6#
      • 1...Ka7
        • 2.Qa3#
      • 1...b5
        • 2.Qa3#
        • 2.Qb6#
      • 1...bxc5!
  • Keys
    • 1.Qe5!
      • 1...Ka7
        • 2.Qa1#
      • 1...b5
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • P(b);P_SPINP(b),SBLOCK::QAR(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);P_PINP(b)
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR(A)
        • P(b);SBLOCK::QAR(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR(A)
        • P(b);P_SPINP(b),SBLOCK::QAR(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR(A)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR(A)
      • Refutation
        • P(b);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAR(A)
      • P(b);SBLOCK::QAR(A)
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